CN204241622U - A kind of generator manually wound insulation above earth potential proving installation - Google Patents
A kind of generator manually wound insulation above earth potential proving installation Download PDFInfo
- Publication number
- CN204241622U CN204241622U CN201420270283.7U CN201420270283U CN204241622U CN 204241622 U CN204241622 U CN 204241622U CN 201420270283 U CN201420270283 U CN 201420270283U CN 204241622 U CN204241622 U CN 204241622U
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- China
- Prior art keywords
- voltage
- insulation
- support bar
- manually wound
- sensor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a kind of generator manually wound insulation above earth potential proving installation, this device comprises detachable electrical pressure sensor, the bonding conductor of High-Voltage Insulation supporting bar top, High-Voltage Insulation support bar, measuring resistance, voltage measurement display device and earthed system, is provided with measuring resistance in described High-Voltage Insulation support bar; One end of described measuring resistance is electrically connected by metallic conductor with High-Voltage Insulation support bar, and the other end is electrically connected by metallic conductor with voltage measurement display device; Be connected with earthed system bottom described voltage measurement display device, High-Voltage Insulation support bar; Detachable electrical pressure sensor is connected with High-Voltage Insulation support bar by the bonding conductor of High-Voltage Insulation supporting bar top; Described detachable electrical pressure sensor is the one in tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor.The utility model solves the problem that existing proving installation cannot be tested end involute urve part manually wound insulation above earth potential.
Description
Technical field
The utility model relates to technical field of electricity, is specifically related to a kind of generator manually wound insulation above earth potential proving installation.
Background technology
Generator is one of visual plant in electrical network, and its safe operation is related to the safety of whole electrical network.Will carry out above earth potential test to generator manually wound insulation, moving measuring technology outside existing current potential is detect the insulation test method of manually wound insulation defect, by detecting density and the opposing insulation intensity of end manually wound insulation.It can make up the deficiency of the overhang insulation defect that the withstand voltage test of equipment AC and DC can't find; Can find lead-in wire bag defective insulation, coil nose insulating wrapping defect, insulation booth is filled mud and is filled discontented, and the defects such as the bad and bad infiltration caused of end-fitting place stator hollow copper wire welding quality of glass rope solidification are washed in colligation.But existing proving installation cannot be tested for end involute urve part manually wound insulation, there is testing blind zone.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of generator manually wound insulation above earth potential proving installation, solves the problem that existing proving installation cannot be tested end involute urve part manually wound insulation above earth potential.
For achieving the above object, the utility model is achieved by the following technical programs:
A kind of generator manually wound insulation above earth potential proving installation, this device comprises detachable electrical pressure sensor, the bonding conductor of High-Voltage Insulation supporting bar top, High-Voltage Insulation support bar, measuring resistance, voltage measurement display device and earthed system, is provided with measuring resistance in described High-Voltage Insulation support bar; One end of described measuring resistance is electrically connected by metallic conductor with High-Voltage Insulation support bar, and the other end is electrically connected by metallic conductor with voltage measurement display device; Be connected with earthed system bottom described voltage measurement display device, High-Voltage Insulation support bar; Detachable electrical pressure sensor is connected with High-Voltage Insulation support bar by the bonding conductor of High-Voltage Insulation supporting bar top;
Described detachable electrical pressure sensor is the one in tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor.
Preferably, described detachable electrical pressure sensor utilizes bolt to be electrically connected with the bonding conductor of High-Voltage Insulation supporting bar top by threaded hole.
Preferably, described detachable electrical pressure sensor is the voltage sensor adopting flexible conducting material to make.
Preferably, can there is respective change in described detachable electrical pressure sensor shape when being squeezed.
Preferably, described detachable electrical pressure sensor is when the shape that is squeezed changes, and its change in resistance is limited in 0.1 ~ 50 Europe.
The utility model at least has following beneficial effect:
1, device described in the utility model simply directly can carry out above earth potential test to generator stator end involute urve part manually wound insulation in production scene.
2, device described in the utility model accurately can also locate the trouble spot in generator manually wound insulation.
Can there is respective change with external world's extruding in the shape of the voltage sensor 3, in device described in the utility model, with the requirement of measuring generator unit stator manually wound insulation above earth potential under adapting to different test environment.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 carries out the schematic diagram that generator manually wound insulation above earth potential tests the proving installation used in the utility model embodiment;
Fig. 2 is the process flow diagram carrying out the test of generator manually wound insulation above earth potential in the utility model embodiment;
Fig. 3 is the schematic diagram carrying out the test of generator manually wound insulation above earth potential in the utility model embodiment;
Fig. 4 is tabular voltage sensor structural representation in the utility model embodiment;
Fig. 5 is spherical voltage sensor structural representation in the utility model embodiment;
Fig. 6 is cylindric voltage sensor structural representation in the utility model embodiment.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, clear, complete description is carried out to the technical scheme in the utility model embodiment, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
See Fig. 1, the utility model embodiment proposes a kind of generator manually wound insulation above earth potential proving installation, this device comprises detachable electrical pressure sensor 1, the bonding conductor 2 of High-Voltage Insulation supporting bar top, High-Voltage Insulation support bar 3, measuring resistance 4, voltage measurement display device 5 and earthed system 6, is provided with measuring resistance 4 in described High-Voltage Insulation support bar 3; One end of described measuring resistance 4 is electrically connected by conductor with High-Voltage Insulation support bar 3, and the other end is electrically connected by conductor with voltage measurement display device 5; Be connected with earthed system 6 bottom described voltage measurement display device 5, High-Voltage Insulation support bar 3; Detachable electrical pressure sensor 1 is connected with High-Voltage Insulation support bar 3 by the bonding conductor 2 on High-Voltage Insulation support bar 3 top;
Described detachable electrical pressure sensor is the one in tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor.
Wherein, described detachable electrical pressure sensor utilizes bolt to be electrically connected with the bonding conductor of High-Voltage Insulation supporting bar top by threaded hole.
Wherein, described detachable electrical pressure sensor is the voltage sensor adopting flexible conducting material to make.
Wherein, can there is respective change in described detachable electrical pressure sensor shape when being squeezed.
Wherein, described detachable electrical pressure sensor is when the shape that is squeezed changes, and its change in resistance is limited in 0.1 ~ 50 Europe, and this Standard resistance range makes the making of compliant conductive plate easier, reduces the requirement of material.
Preferably, the complete method flow process utilizing said apparatus to carry out the test of generator manually wound insulation above earth potential is shown in Fig. 2, as follows:
Step 201: with tinfoil parcel generator unit stator manually wound insulation end, comprise stator coil manually wound insulation end, high-voltage output end manually wound insulation and neutral terminal manually wound insulation.
Step 202: dismantle the detachable electrical pressure sensor be connected on the bonding conductor of described High-Voltage Insulation supporting bar top, and install sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top, test generator unit stator manually wound insulation end above earth potential.Wherein, above earth potential preset range is 0 to 2000V.
Step 203: judge generator unit stator manually wound insulation end above earth potential whether in the scope preset, if in the scope preset, performs step 204; Otherwise, remove and install the sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, described spherical voltage sensor be installed or cylindric voltage sensor carries out localization of fault.
Step 204: remove and install the sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top, and at the bonding conductor upper mounting plate shape voltage sensor of described High-Voltage Insulation supporting bar top, test involute urve part manually wound insulation above earth potential.
In this step, according to electricity generator stator coil involute urve part installation situation, the information such as such as manually wound insulation spacing, density, length, also can select to install on the bonding conductor at described High-Voltage Insulation supporting bar top the test that spherical voltage sensor or cylindric voltage sensor carry out involute urve part manually wound insulation above earth potential.
Step 205: judge involute urve part manually wound insulation above earth potential whether in the scope preset, if in the scope preset, performs step 206; Otherwise, remove and install the tabular voltage sensor on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, spherical voltage sensor be installed or cylindric voltage sensor carries out localization of fault.Wherein, above earth potential preset range is 0 to 2000V.
Step 206: carry out all the other involute urve part manually wound insulation above earth potentials and measure until terminate test.
The Cleaning Principle figure of the utility model embodiment as shown in Figure 3, comprises manually wound insulation resistance 7, measuring resistance 8, milliammeter 9, sound-producing device 10 and earthed system 11.Wherein manually wound insulation resistance 7 is electricity generator stator coil manually wound insulation equivalent resistances, and as manually wound insulation is good, its resistance is much larger than measuring resistance 8 resistance; If manually wound insulation punctures or defectiveness, its resistance declines and measuring resistance 8 is even far smaller than measuring resistance 8 with the order of magnitude.Whether judge that whether manually wound insulation is good together with sounding according to the pointer of milliammeter is partially dynamic with generating means.
Wherein, described detachable electrical pressure sensor is the voltage sensor adopting flexible conducting material to make, this material satisfies condition: first, resistance value is little, relative to the resistance of described measuring resistance, the voltage sensor resistance that this material makes is very little, almost negligible, secondary sexual character is variable, when sensor is subject to external force extruding, can be there is respective change to adapt to the detection under different spaces condition in its proterties, and too large change can not occur resistance, generally can remain in certain Standard resistance range.
In reality test, according to test needs, difform voltage sensor can adjust each parameter flexibly, and such as choosing diameter is that the ball of 3cm is as voltage sensor main body.
The structure of tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor described in the utility model embodiment as shown in Figure 4,5, 6.
As shown in Figure 4, be the described tabular voltage sensor of one, comprise removable compliant conductive plate 12, metal connecting piece 13 and fixture 14, wherein, one end of metal connecting piece 13 is electrically connected with described removable compliant conductive plate 12 by fixture 14;
When described removable compliant conductive plate 12 is squeezed, can there is respective change in its shape;
When described removable compliant conductive plate 12 is squeezed, the resistance of tabular sensor remains in the Standard resistance range in 0.1 ~ 50 Europe.
Wherein, the other end of described metal connecting piece utilizes bolt to be connected with other devices outside by screw thread 15.In the present embodiment, the other end of metal connecting piece utilizes bolt to be connected with the bonding conductor of High-Voltage Insulation supporting bar top by screw thread.
Wherein, the thickness of described removable compliant conductive plate is in the scope of 0.1cm ~ 1cm.
Thickness can meet within the scope of this space between different generator end manually wound insulation different but measure time sensor only measure and specify manually wound insulation and the requirement that is connected in series between manually wound insulation can not be made
Wherein, the width of described removable compliant conductive plate is in the scope of 2cm ~ 10cm.
Width can meet the difform measurement of different generator end manually wound insulation and require and measurement range requirement within the scope of this.
Wherein, the length of described removable compliant conductive plate is in the scope of 5cm ~ 20cm.
Length can meet the difform measurement of different generator end manually wound insulation and require and measurement range requirement within the scope of this, meets the requirement that between the manually wound insulation of end, depth is measured simultaneously.
In reality test, according to test needs, described tabular voltage sensor can adjust its parameter flexibly, such as, can change one or more parameters in its length, width or thickness as required.Such as to accurately measure involute urve above earth potential, then need constantly to change its thickness, what it was contacted is properer, thus easily obtains measurement result more accurately.
See Fig. 5, for the described spherical voltage sensor of one, comprise removable compliant conductive ball 16, bearing 17, connecting frame 18, fixture 19 and metal connecting piece 20, wherein, bearing 17 is electrically connected with connecting frame 18 through after compliant conductive ball 16, and one end of metal connecting piece 20 is electrically connected with connecting frame 18 by fixture 19;
When described removable compliant conductive ball is squeezed, can there is respective change in its shape;
When described removable compliant conductive ball is squeezed, the resistance of spherical sensor remains in the Standard resistance range in 0.1 ~ 50 Europe.
Wherein, the other end of described metal connecting piece utilizes bolt to be connected with other devices outside by screw thread 21.In the present embodiment, the other end of metal connecting piece utilizes bolt to be connected with the bonding conductor of High-Voltage Insulation supporting bar top by screw thread.
Wherein, the diameter of described removable compliant conductive ball is within the scope of 1cm ~ 10cm.
Diameter can meet within the scope of this space between different generator end manually wound insulation different but measure time sensor only measure and specify manually wound insulation and the requirement that is connected in series between manually wound insulation can not be made, difform the measurements requirement of different generator end manually wound insulation and measurement range requirement can be met within the scope of this simultaneously.
In reality test, according to test needs, described spherical voltage sensor can adjust its parameter flexibly, such as, can change its diameter as required, with the requirement of satisfied different test environment.Such as to the accurate localization of faults, need constantly to change its diameter, make its contact range less, thus obtain position of failure point more accurately.
See Fig. 6, for the described cylindric voltage sensor of one, comprise removable compliant conductive cylinder 22, bearing 23, connecting frame 24, fixture 25 and metal connecting piece 26, wherein, bearing 23 is electrically connected with connecting frame 24 through after compliant conductive cylinder 22, and one end of metal connecting piece 26 is electrically connected with connecting frame 24 by fixture 25;
When described removable compliant conductive cylinder is squeezed, can there is respective change in its shape;
When described removable compliant conductive cylinder is squeezed, the resistance of cylindric sensor remains in the Standard resistance range in 0.1 ~ 50 Europe.
Wherein, the other end of described metal connecting piece utilizes bolt to be connected with other devices outside by screw thread 27.
Wherein, the diameter of described removable compliant conductive cylinder is in the scope of 1cm ~ 10cm.
Diameter can meet within the scope of this space between different generator end manually wound insulation different but measure time sensor only measure and specify manually wound insulation and the requirement that is connected in series between manually wound insulation can not be made, difform the measurements requirement of different generator end manually wound insulation and measurement range requirement can be met within the scope of this simultaneously.
Wherein, the height of described removable compliant conductive cylinder is in the scope of 5cm ~ 20cm.
Height can meet the difform measurement of different generator end manually wound insulation and require and measurement range requirement within the scope of this, meets the requirement that between the manually wound insulation of end, depth is measured simultaneously.
In reality test, according to test needs, described cylindric voltage sensor can adjust its parameter flexibly, such as can change in its diameter and height as required one or both, such as to accurately determine abort situation, need constantly to change its diameter, make its contact range less, thus obtain abort situation more accurately.
Device described in the utility model embodiment simply directly can carry out above earth potential test to generator stator end involute urve part manually wound insulation in production scene.
Device described in the utility model embodiment accurately can also locate the trouble spot in generator manually wound insulation.
Can there is respective change with external world's extruding in the shape of the voltage sensor in device described in the utility model embodiment, with the requirement of measuring generator unit stator manually wound insulation above earth potential under adapting to different test environment.
Above embodiment, only for illustration of the technical solution of the utility model, is not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (3)
1. a generator manually wound insulation above earth potential proving installation, it is characterized in that, this device comprises detachable electrical pressure sensor, the bonding conductor of High-Voltage Insulation supporting bar top, High-Voltage Insulation support bar, measuring resistance, voltage measurement display device and earthed system, is provided with measuring resistance in described High-Voltage Insulation support bar; One end of described measuring resistance is electrically connected by metallic conductor with High-Voltage Insulation support bar, and the other end is electrically connected by metallic conductor with voltage measurement display device; Be connected with earthed system bottom described voltage measurement display device, High-Voltage Insulation support bar; Detachable electrical pressure sensor is connected with High-Voltage Insulation support bar by the bonding conductor of High-Voltage Insulation supporting bar top;
Described detachable electrical pressure sensor is the one in tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor.
2. device according to claim 1, is characterized in that, described detachable electrical pressure sensor utilizes bolt to be electrically connected with the bonding conductor of High-Voltage Insulation supporting bar top by threaded hole.
3. device according to claim 2, is characterized in that, described detachable electrical pressure sensor is the voltage sensor adopting flexible conducting material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270283.7U CN204241622U (en) | 2014-05-23 | 2014-05-23 | A kind of generator manually wound insulation above earth potential proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270283.7U CN204241622U (en) | 2014-05-23 | 2014-05-23 | A kind of generator manually wound insulation above earth potential proving installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241622U true CN204241622U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420270283.7U Withdrawn - After Issue CN204241622U (en) | 2014-05-23 | 2014-05-23 | A kind of generator manually wound insulation above earth potential proving installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092931A (en) * | 2014-05-23 | 2015-11-25 | 国网山西省电力公司电力科学研究院 | Apparatus for testing potential to ground of manually wound insulation of generator |
-
2014
- 2014-05-23 CN CN201420270283.7U patent/CN204241622U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092931A (en) * | 2014-05-23 | 2015-11-25 | 国网山西省电力公司电力科学研究院 | Apparatus for testing potential to ground of manually wound insulation of generator |
| CN105092931B (en) * | 2014-05-23 | 2017-09-26 | 国网山西省电力公司电力科学研究院 | A kind of generator manually wound insulation above earth potential test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150401 Effective date of abandoning: 20170926 |
|
| AV01 | Patent right actively abandoned |